摘要:
A computer-implemented method for detecting a malicious process using file-name heuristics may comprise: 1) identifying a process, 2) identifying a process name for the process, 3) identifying a list of process names for non-malicious processes, and 4) determining, by comparing the process name for the process with the list of process names for non-malicious processes, whether to allow the process to execute. A method for maintaining a database containing information about non-malicious processes is also disclosed. Corresponding systems and computer-readable media are also disclosed.
摘要:
A possibly pre-infected system is inspected for the existence of tracked application-specific accounts. In a tracked application-specific account is found, the system is further audited to verify that only authorized processes are using the account and that the authorized account creation application is installed on the host computer system.
摘要:
An outgoing e-mail manager inserts headers into outgoing e-mail messages originating from at least one source on a computer. Each header includes data concerning the source of the e-mail. An e-mail header manager monitors an e-mail stream, and reads headers inserted into e-mail messages. The e-mail header manager applies a security policy to e-mail messages, responsive to the contents of the inserted headers.
摘要:
Methods, apparatuses, and computer-readable media for preventing the spread of malicious computer code. An embodiment of the inventive method comprises the steps of: identifying (110) a computer application that is data mining an e-mail address; determining (130) whether the computer application associates at least one executable application and the data mined e-mail address with an e-mail message (120); and blocking (140) the transmission of the e-mail message when the e-mail message is associated with the at least one executable application and the data mined e-mail address.
摘要:
A late binding code manager prevents the unauthorized loading of late binding code into a process. The late binding code manager detects an attempt to load late binding code into a process's address space. Subsequently, the late binding code manager determines whether a detected attempt to load late binding code into a process's address space is permitted. Responsive to the results of a determination as to whether an attempt to load late binding code into a process's address space is permitted, the late binding code manager executes at least one additional step affecting the loading of the late binding code into the process's address space. Such a step can comprise permitting, blocking or modifying the attempt to load the late binding code.
摘要:
A computer-implemented method for detecting an obfuscated executable may include identifying an executable file programmed to execute on a target architecture. The method may also include disassembling a first section of the executable file and determining whether the first section of the executable file comprises a valid instruction. The method may further include determining, based on whether the first section of the executable file comprises a valid instruction, whether the executable file poses a security risk. Various other methods, computer-readable media, and systems are also disclosed.
摘要:
An exemplary method for reducing false positives produced by heuristics may include: 1) training a heuristic using a set of training data, 2) deploying the heuristic, 3) identifying false positives produced by the heuristic during deployment, and then 4) tuning the heuristic by: a) duplicating at least a portion of the false positives, b) modifying the training data to include the duplicate false positives, and c) re-training the heuristic using the modified training data. Corresponding systems and computer-readable media are also disclosed.
摘要:
The launch of an installer or uninstaller is detected. A process lineage tree is created representing the detected launched installer/uninstaller process, and all processes launched directly and indirectly thereby. The detected installer/uninstaller process is represented by the root node in the process lineage tree. Launches of child processes by the installer/uninstaller process and by any subsequently launched child processes are detected. The launched child processes are represented by child nodes in the tree. As long as the installer/uninstaller process represented by the root node in the tree is running, the processes represented by nodes in tree are exempted from anti-malware analysis. The termination of the installer/uninstaller process is detected, after which the processes represented by nodes in the process lineage tree are no longer exempted from anti-malware analysis.
摘要:
A method for analyzing an unverified executable file within an antivirus engine in order to identify the executable file as being obfuscated by an unknown obfuscator program is described. An unverified executable file comprising obfuscated library strings is received. A list of pre-verified library strings is accessed. A determination is made as to whether the unverified executable file comprises one or more of the pre-verified library strings. The unverified executable file is identified as being obfuscated by an unknown obfuscator program if the file does not comprise one or more of the pre-verified library strings.
摘要:
A stealth threat detection manager detects stealth threats. The stealth threat detection manager monitors system activities that are vulnerable to being used by stealth threats. Dynamic link libraries are often used by stealth threats, so in some embodiments the stealth threat detection manager monitors for the loading thereof. The stealth threat detection manager detects when a system activity being monitored occurs, and after the occurrence of the activity, determines whether a specific component associated with the activity (e.g., the dynamic link library being loaded) is accessible on the computer. If the component is accessible, the stealth threat detection manager concludes that the component is non-stealthed. On the other hand, if the component is not accessible, the stealth threat detection manager concludes that the component is a stealth threat, and takes appropriate action in response.